44 results for “mutations”

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InvestigationOpen accessIn the abstractA State of PSI and PSII Photochemistry of Sunflower Yellow-Green Plastome MutantMaksim S. Makarenko, Nikolay V. Kozel, Alexander V. Usatov et al.Chlorophyll deficient mutants are appropriate model objects for a large number of investigations in the field of photosynthesis. In this study, we identified a state of Photosystem I (PSI) and Photosystem II (PSII) photochemistry and light responses of the sunflower yellow-green mutant line - en:chlorina-7, wherein mutations in chloroplast genes have been previously localized. The conducted research revealed low content … …OnLine Journal of Biological Sciences, Vol. 16, Issue 4 · 29 Dec 2016 · 7,458 accessesView PDF Cite

Research ArticleOpen accessIn the abstractVariability of Chloroplast DNA of Extranuclear Sunflower MutantsMarkin Nicolay, Aieksandr Usatov, Maria Logacheva et al.A comparative analysis of full-genome sequences of chloroplast DNA (cpDNA) of the original inbred line 3629 and three extranuclear mutants, which were obtained by the method of mutagenesis induced with N-nitroso-N-methylurea (NMU) and characterized by different level of chlorophyll insufficiency (en:chlorina-7-yellow-green leaves; chlorophyll content (a + b)-67.8% with respect to the line 3629, variegated-10-leaves with white zones; chlorophyll content (a … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 1 · 26 Mar 2016 · 7,269 accessesView PDF Cite

Research ArticleOpen accessIn the abstractIn Silico Sequence Analysis, Structure Prediction and Function Annotation of Melanocortin 1 Receptor Gene (MC1R) from the Guppy Poecilia reticulataAbdul Khader Sultan Mohideen, Mehboob Asrar Sheriff, Kareem AltaffThe common guppy, Poecilia reticulata is one of the most popular aquarium fish used as a model organism in toxicology, embryology and genetical studies. Vibrant colors in males are a secondary sexual character which attracts the females for mating. Pigmentation in guppy is found to be linked with melanin synthesis. Melanocortin genes are involved in the synthesis of melanin pigments. … …American Journal of Biochemistry and Biotechnology, Vol. 11, Issue 4 · 17 Nov 2015 · 8,614 accessesView PDF Cite

Research ArticleOpen accessIn the abstractMinimum Free Energy Based Evaluation of mRNAs Secondary Structures Constructed by 18 Clinically Significant Exonic Single Nucleotide Polymorphisms (SNPs) and Haplotypes of 5 Missense SNPs of RB1 GeneSarder Nasir Uddin, Apurba Majumder, Khandker Khaldun Islam et al.Clinically significant 18 Single Nucleotide Polymorphisms (SNPs) from exon regions of Retinoblastoma gene (RB1) were analyzed to find out the structural variations in mRNAs. Online bioinformatic tools i.e., Vienna RNA, RNAfold were used for secondary structure analysis of mRNAs. Predicted minimum Free Energy Change (MFE) was calculated for mRNAs structures. It has been observed that the average of predicted MFE … …American Journal of Biochemistry and Biotechnology, Vol. 11, Issue 4 · 21 Oct 2015 · 8,556 accessesView PDF Cite

EditorialOpen accessIn the abstractAMYOTROPHIC LATERAL SCLEROSIS: HOW TO UNDERSTAND SUCH DIVERSE AND SO ENTANGLED PHYSIOPATHOLOGY?Carlos Henrique Melo Reis, Marco Orsini, Marco Antônio Araujo Leite et al.When in 1865, JeanMartin Charcotreported patients with progressive muscular atrophysuperimposedwith spasticity of inexorable evolution as result of combinedlesions of the anterior horn and lateral column of the spinal cord, hecertainly inaugurated an attempt on the comprehension of one of the mostcomplexes neurological clinical conditions, which until today persists withimmense voids on their comprehension, regardless of the enormous advancesachieved. Astime went … …Current Research in Medicine, Vol. 5, Issue 2 · 16 Feb 2015 · 7,149 accessesView PDF Cite

Research ArticleOpen accessIn the abstractP53 Gene: Mutation and Immunohistochemical Analysis in Patients with Invasive Ductal Carcinoma of BreastShinjini Singh, Sandeep Kumar Rajput, Mritunjai Singh et al.The p53 tumor suppressor gene is the most commonly mutated gene in cancer. In breast cancer, the presence of p53 gene alterations has been associated with worse prognosis. This study was attempted to associate p53 gene mutations with its protein expression in North Eastern Indian population. We used single-stranded conformation polymorphism to screen samples for mutations in five conserved regions, … …American Journal of Biochemistry and Biotechnology, Vol. 9, Issue 4 · 20 Dec 2013 · 7,244 accessesView PDF Cite

Research ArticleOpen accessIn the abstractHigh Frequency of Stop Codons in the Human Immunodeficiency Virus-1 Protease Gene Frame in Human Immunodeficiency Virus+ Individuals with Below Detectable Levels of Plasma Viremia During Highly Active Antiretroviral TherapyMagdalena Czubala, Kabo Matlho, Maria Arriaga et al.We performed sequence analysis of HIV-1 proviral protease gene fragment (560 base pairs) amplified from ex-vivo peripheral blood mononuclear cells of 83 HIV+ individuals with Below Detectable Levels (BDL) (<20-40 RNA copies/ml plasma) and detectable levels of plasma HIV viremia while on HAART. Noteworthy was the systematic presence of stop codons identified only in the BDL group and not in … …American Journal of Infectious Diseases, Vol. 8, Issue 3 · 14 Nov 2012 · 8,073 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAnalysis of Resistance to Human Immunodeficiency Virus Protease Inhibitors Using Molecular Mechanics and Machine Learning StrategiesA. Harishchander, D. Alex Anand, Sanjib SenapatiProblem statement: Drug resistance is the most important factor, which influences the failure of current HIV therapies. So, the ability to predict the drug resistance of HIV-1 protease mutants will be useful in developing more effective and longer lasting treatment regimens. Approach: Drug resistance of HIV-1 protease is predicted with two current protease inhibitors (Indinavir and Saquinavir). The problem was … …Current Research in Medicine, Vol. 1, Issue 2 · 31 Oct 2010 · 7,204 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAssessment of Site Specific Mutational Effect on Transcription Initiation at Escherichia coli PromoterS. Kannan, M. Krishnan, S. Sundarraj et al.Problem statement: It is widely accepted thought that the weak promoters control the RNA synthesis and play regulatory role in complex genetic networks in bacterial system. An experiment had been designed to address whether mutations in the -16/-17 region affect the rate of transcription at an activator-independent promoter in E. coli or not? Approach: The aim of this study was … …American Journal of Biochemistry and Biotechnology, Vol. 5, Issue 2 · 30 Jun 2009 · 7,555 accessesView PDF Cite

Review ArticleOpen accessIn the abstractThe HCV Replicase InteractomeAntonio Mas, Pilar Clemente-Casares, Eugenio Ramírez, Rosario SabariegosViruses are obligate parasites and can only reproduce within host cells because they lack metabolic pathways to complete their replication cycles. Host factors required in viral replication are mainly those involved in lipid metabolism, cell cycle control and apoptosis, cell-to-cell interactions, immune system regulation, etc. Several inhibitors targeting viral polymerases have been designed. However, the rapid appearance of resistant mutants, … …Current Research in Virology, Vol. 5, Issue 1 · 27 Jul 2016 · 13,210 accessesView PDF Cite